Thank you On Fri, Dec 11, 2015 at 12:40 AM, Axel Kohlmeyer <[email protected]> wrote:
> On Thu, Dec 10, 2015 at 5:25 PM, mohammed shambakey > <[email protected]> wrote: > > Hi > > > > when running pw.x on a multi-node cluster using OpenMP+MPI, is it > possible > > to record each thread id, running on which core, in which node? > > not without using special settings and special libraries. both MPI > ranks and OpenMP thread-ids are by default 100% hardware agnostic and > are assigned to individual cores based on the kernel scheduling > algorithms, thus those can change quite rapidly. > many MPI and OpenMP implementations allow to use OS-specific APIs to > assign "affinity" of an MPI rank or a thread to specific cores (or > rather provide an assignment pattern). > > axel. > > > > > Regards > > > > -- > > Mohammed > > > > _______________________________________________ > > Pw_forum mailing list > > [email protected] > > http://pwscf.org/mailman/listinfo/pw_forum > > > > -- > Dr. Axel Kohlmeyer [email protected] http://goo.gl/1wk0 > College of Science & Technology, Temple University, Philadelphia PA, USA > International Centre for Theoretical Physics, Trieste. Italy. > _______________________________________________ > Pw_forum mailing list > [email protected] > http://pwscf.org/mailman/listinfo/pw_forum > -- Mohammed
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